AR-15 .22lr complete upper versus drop-in .22 conversion kit?

[monkeylice]

What is the advantage of purchasing a complete upper chambered in .22lr rather than buying a 5.56 upper and a .22lr drop-in conversion?

Does it just save you the cost of buying 2 bolt carrier groups when you just need one, or are there more parts involved that make the .22lr upper better?

I'm asking because I am currently putting together and AR-15 in 5.56 (my first) and I have a spare lower that I am thinking about setting up for .22lr.

Thanks!

[roushstage2]

Better accuracy. A 1 in 7 twist rate isn't the optimal rate for a .22LR round. If you aren't worried about absolute precision, a conversion kit should be just fine. At least, that's my understanding between the two.

[verapakill]

A dedicated 22lr would be nicer than having to switch out the BCG every time you want to shoot 22

[shadow65]

Accuracy, dirt/gunk and changing POI.
A CMMG dedicated will give you 1" at 50 yards.
A 5.56 depending on barrel/ammo combo will vary. Generally about 2" at 50 yards.
PM me and I'll give you pricing.
Dave N

[the86d]

Some people want a completely dedicated rig (including lower) that does not contain a Bullet Button.

(Quick lower-swap if SHTF too, but it's < a 2 minute change-out anyway.)

[uxo2]

1in 16
vs
1in7/9
twist.....

Or as stated
Some like me want a true dedicated .22lr

[Steerme]

I bought a conversion kit so that I could practice handling and shooting my AR for very little cost. It was not meant to be an accurate solution. I picked up a used conversion kit for $120.

I find that .22LR is dirtier than 556 so a dedicated .22LR upper might keep your "go to" upper cleaner, run fewer rounds down your barrel and provide for better accuracy.

Also remember that your sights must be adjusted when going between .22LR and 556, so you may wish to keep a dedicated optic/sight for .22LR use if your AR upper is going to be a "go to" firearm and you don't want to rezero between calibers.

[deviljon]

If you have the money, get a dedicated .22lr upper ESPECIALLY if you have a spare lower. If you don't have the money but still want to shoot .22lr ammo in an AR platform, then save up and get the dedicated upper when you can afford it.